/*
    * The Kuali Financial System, a comprehensive financial management system for higher education.
    * 
    * Copyright 2005-2014 The Kuali Foundation
    * 
    * This program is free software: you can redistribute it and/or modify
    * it under the terms of the GNU Affero General Public License as
    * published by the Free Software Foundation, either version 3 of the
    * License, or (at your option) any later version.
   * 
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU Affero General Public License for more details.
   * 
   * You should have received a copy of the GNU Affero General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  package org.kuali.kfs.sys.util;
  
  import java.text.MessageFormat;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Set;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.kfs.sys.context.SpringContext;
  import org.kuali.rice.core.api.config.property.ConfigurationService;
  import org.kuali.rice.krad.util.ErrorMessage;
  import org.kuali.rice.krad.util.GlobalVariables;
  import org.kuali.rice.krad.util.MessageMap;
  
  public class GlobalVariablesUtils {
     private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(GlobalVariablesUtils.class);
  
     public static List<String> extractGlobalVariableErrors() {
         List<String> result = new ArrayList<String>();
  
         MessageMap errorMap = GlobalVariables.getMessageMap();
  
         // Set<String> errorKeys = errorMap.keySet(); // deprecated
         Set<String> errorKeys = errorMap.getAllPropertiesWithErrors();
         List<ErrorMessage> errorMessages = null;
         Object[] messageParams;
         String errorKeyString;
         String errorString;
  
         for (String errorProperty : errorKeys) {
             // errorMessages = (List<ErrorMessage>) errorMap.get(errorProperty); // deprecated
             errorMessages = errorMap.getErrorMessagesForProperty(errorProperty);
             LOG.debug("error Messages :::: " + errorMessages.toString());
             for (ErrorMessage errorMessage : errorMessages) {
                 errorKeyString = SpringContext.getBean(ConfigurationService.class).getPropertyValueAsString(errorMessage.getErrorKey());
                 messageParams = errorMessage.getMessageParameters();
                 LOG.debug("message parameters:::  " + messageParams);
                 LOG.debug("errorKeyString :::: " + errorKeyString);
                 // MessageFormat.format only seems to replace one
                 // per pass, so I just keep beating on it until all are gone.
                 if (StringUtils.isBlank(errorKeyString)) {
                     errorString = errorMessage.getErrorKey();
                 }
                 else {
                     errorString = errorKeyString;
                 }
                 LOG.debug(errorString);
                 if (errorString.matches("^.*\\{\\d\\}.*$")) {
                     errorString = MessageFormat.format(errorString, messageParams);
                 }
                 result.add(errorString);
             }
         }
  
         // clear the stuff out of global vars, as we need to reformat it and put it back
         GlobalVariables.clear();
         return result;
     }
  }